1 files changed, 9 insertions, 8 deletions

diff --git a/lgc.h b/lgc.h
index c960e706..538f6edc 100644
--- a/lgc.h
+++ b/lgc.h
@@ -172,18 +172,19 @@
 #define luaC_checkGC(L)         luaC_condGC(L,(void)0,(void)0)
 
 
-#define luaC_barrier(L,p,v) (  \
-        (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ?  \
-        luaC_barrier_(L,obj2gco(p),gcvalue(v)) : cast_void(0))
-
-#define luaC_barrierback(L,p,v) (  \
-        (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \
-        luaC_barrierback_(L,p) : cast_void(0))
-
 #define luaC_objbarrier(L,p,o) (  \
         (isblack(p) && iswhite(o)) ? \
         luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0))
 
+#define luaC_barrier(L,p,v) (  \
+        iscollectable(v) ? luaC_objbarrier(L,p,gcvalue(v)) : cast_void(0))
+
+#define luaC_objbarrierback(L,p,o) (  \
+        (isblack(p) && iswhite(o)) ? luaC_barrierback_(L,p) : cast_void(0))
+
+#define luaC_barrierback(L,p,v) (  \
+        iscollectable(v) ? luaC_objbarrierback(L, p, gcvalue(v)) : cast_void(0))
+
 LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o);
 LUAI_FUNC void luaC_freeallobjects (lua_State *L);
 LUAI_FUNC void luaC_step (lua_State *L);